单项选择题

The concerns with the origins of the earth ______ their study.

A．motivated
B．advised
C．excited
D．impulsed
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单项选择题
The less the surface of the ground yields to the weight of a fully-loaded truck, ______ to the truck.
A．the greater stress is
B．greater is the stress
C．the stress is greater
D．the greater the stress is
单项选择题
Britain's press is unusual ______ it is divided into two very different types of newspaper: the quality press and the popular press.
A．in how
B．in what
C．in which
D．in that
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